package puzzle.projecteuler.p100;

import astudy.util.AdvMath;


public class Problem005 {

	public static void main(String[] args) {

		long l = 1; 
		for (long i = 1; i <= 20; i ++) {
			l = AdvMath.lcd(l, i);
		}
		System.out.println(l);
	}
}
